CAN-Repeater CRep N

Special Features

Short propagation delay

Extended error suppression, separation of faulty segments

Wide range of power supply and operational temperature

Assembly rail fixing, connection by terminal block

Description

The assembly rail mountable CAN repeater CRep N transmits and amplifies CAN signals in
a protocol transparent way. CRep N allows the design of flexible wiring topologies. Star and
tree structures as well as stub lines can be realized. The maximum data rate in comparison
to a line structure can be increased by a suitable topology. For the most common occuring
errors the integrated error suppression reduces the influence of faulty segments to intact
sections. Besides technical improvements the selection of the most favourable network
topology can lower the installation costs.
Both CAN connections behave like one single physical CAN node. An increase in the
maximum number of nodes can be achieved by separation of the network into several
segments, each of them connected by CRep N. Each sub network can then manage a
maximum number of CAN nodes only restricted by the transceiver driver capabilities. With
transmission over long distances CRep N allows signal recovering.

Technical Data

Layout and Connection

CRep N devices include 2 CAN segments, wired by a terminal block with 8 clamps. Besides
the CAN signals the terminal block also carries the power supply for CRep N. The following
table shows the terminal assignment.

Pin

Name

Function

1

CAN1_H

CAN bus line circuit 1 (dominant high)

2

CAN1_L

CAN bus line circuit 1 (dominant low)

3

GND

Ground line

4

GND

Ground line

5

CAN2_H

CAN bus line circuit 2 (dominant high)

6

CAN2_L

CAN bus line circuit 2 (dominant low)

7

GND

Ground line

8

+24V

Power supply +24V

Limiting Values

Parameter

Minimum

Maximum

Unit

Storage temperature

-40

+90

°C

Operating temperature

-20

+80

°C

Supply voltage

-100

+35

V

Voltage on bus connections

-30

+30

V

Admissible power consumption (at 60°C)

n.s.

1000

mW

Any (also temporary) stress in excess of the limiting values may cause permanent damage on CRep N and other
connected devices. Exposure to limiting conditions for extended periods may affect the reliability and shorten the
life cycle of the device.

Nominal Values

Parameter

Minimum

Typical

Maximum

Unit

Current consumption (running idle)

n.s.

25

n.s.

mA

Current sonsumption (250 kBits/s, 100% busload)

n.s.

35

n.s.

mA

Supply voltage

11

24

30

V

Propagation delay

n.s.

100

175

ns

All values, unless otherwise specified, refer to a supply voltage of 24V and an environmental temperature of 20°C.